This is the first time I post a question here, but sometimes I do read posts here. My question is concerned (again) with homework questions. My objectives in this site has been always the followings:
I - Learn Mathematics,
II - Teach Mathematics to whom want to know it.
In general I don't answer homework problems, because in general they only seek for a solution, not for a better understanding of the problem, but sometimes, I leave a comment to OP, to improve the question, to show efforts, etc...
But all of this seems to me a waste of time, because in most part of the cases, another user answer the question, even if the question is only a "Prove it" or "Prove that". Now, we can close questions of this kind, but the questions is put "On Hold" and if a answer was given, anyone can read the answer. Today I get angry with a question and instead of help, I have posted a ironic answer which I have deleted.
My question is: Why even after the question was closed, we can still see the answer? Is it not better to turn the answer invisible or something like that?
Remark: sorry about my English.